Devices to reduce vapor bypass in packed columns and method of assembly
CA 2284228 A1 · Owner: Joyce Frank Gerard · Inventors: Cerino, Francis Thomas; Armstrong, Phillip Andrew; Joyce Frank Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is disclosed for exchanging heat and/or mass between a flowing liquid, stream and a flowing vapor stream. The apparatus includes a substantially cylindrical, section of a column having an inner wall and a plug of packing disposed , inside the section of the column. The plug of packing has an exterior surface spaced apart from the inner wall, of the section of the column. The apparatus also includes restricting means for minimizing, flow of the vapor stream in the space between the inner wall of the section of the column and, the exterior surface of the plug of packing.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 28, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.